Superguy is flying at treetop level near Paris when he sees the Eiffel Tower elevator start to fall (the cable snapped).His x-ray vision tells him Lois LaTour is inside.If Superguy is 1.4 km away from the tower,and the elevator falls from a height of 210 m,how long does Superguy have to save Lois,and what must be his average speed?

A) 4.63 s,302 m/s
B) 8.02 s,175 m/s
C) 6.55 s,214 m/s
D) 9.26 s,151 m/s
E) 3.27 s,428 m/s

Question

Superguy is flying at treetop level near Paris when he sees the Eiffel Tower elevator start to fall (the cable snapped).His x-ray vision tells him Lois LaTour is inside.If Superguy is 1.4 km away from the tower,and the elevator falls from a height of 210 m,how long does Superguy have to save Lois,and what must be his average speed?
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A) 4.63 s,302 m/s
B) 8.02 s,175 m/s
C) 6.55 s,214 m/s
D) 9.26 s,151 m/s
E) ​3.27 s,428 m/s

Quizplus · Accepted Answer

First, we can use the formula d = 1/2 * g * t^2 to find the time it takes for the elevator to fall from a height of 210 m:

210 = 1/2 * 9.8 * t^2
t = sqrt(42.86) = 6.55 s

Next, we can use the distance and time to find Superguy's average speed:

average speed = distance / time
average speed = 1.4 km / 6.55 s
average speed = 214 m/s

Therefore, the answer is C) 6.55 s,214 m/s.

Superguy Is Flying at Treetop Level near Paris When He